Which of the following appeared before the first cells evolved?

A. protists

B. Eukaryotes

C. Archaea

D. protobionts

Which of the following would not be a choice on a parallel key?

Which electrons in an atom take part in chemical bonding and what are they called

How many poops does he average human take

Compare and contrast the GPI to the GDP. Which one more accurately reflects progress? Explain.

Which statement is a good description of biomes? a) Many types of water and land biomes exist on earth. b) Land biomes are more complex than water biomes. c) Biome types only refer to areas on land, not water.

About how long is the island from the southwest corner to the northeast corner

Place the following in correct sequence from the formation of a drop of urine to its elimination from the body. 1. major calyx 2. minor calyx 3. nephron 4. urethra 5. ureter 6. collecting duct

Which of the following locations will most likely have the LEAST amount of evaporation? Amazon Jungle Florida Wetlands London, England

When fluids leak out of the cardiovascular system they are returned by the

The n = 2 shell of an atom contains a maximum of: two electrons seven electrons eight electrons eleven electrons